Sash-cord fastener.



UNITED ySTATES PATENT OFFICE.

EDWARD L. BLAOKMAN, 0F BROOKLYN, NEW YORK.

' SASH-CORD FASTENER.

SPECIFICATION forming part of Letters Patent No. y702,395, dated June 17, 1902.

Application filed March 27. 1901. Serial No. 53,020. (No model.)

T0 all whom. it may concern:

Be it known that I, EDWARD L. BLACKMAN, a citizen of the United States, residing in the borough of Brooklyn, in the city of New York, in the county of Kings and State of NewYork, have invented a new and useful Improvement in Window Sash Oord Fasteners, of which the following is a specification.

My invention relates to window-sash-cord fasteners; and itsV novelty consists in the construction and adaptation of the parts, as will be more fully hereinafter pointed out.

Figure l is a plan view of the sash-cord pulley and adjacent parts. Fig. 2 is a sectional view taken on the broken line 2 2 of Fig. l. Fig. 3 is a side view, and Fig. 4 is an'end view, of the sash-cord plug.

In the drawings, a represents one side j amb of a window-frame, and b is the lower sash of the Window. The sash is arranged to slide vertically in grooves in the usual manner and is provided with sash-cords' adapted to be run over pulleys and secured to weights at their outer extremities Vin the usual manner. The sash-cord c of the right-hand side of the lower sash is connected removably to the sash in any convenient manner. I prefer to use an upwardly and inwardly projecting plug, as p, adapted to fit in a suitable aperture b in the frame and provided with a vertical external groove around which the end o' of the cord c can be spliced. This cord passesupward and over the pulley fr (mounted in suitable bearings and grooved in the usual mauner) and then downward,a weight (not shown) being attached at its extremity. y In front of the pulley r is securedaface-plate f by screws j" or otherwise. A block d is attached at the lower part of its side d to a retracting device e, which in the form of my invention illustrated consists of `a vertically-coiled spiral spring fastened at its lower extremity e and placed within a recess e" in the window frame or casing beneath the face-platef. At the upper part of the side d the block d is secured to a cord g on each side. This `cord passes through screw-eyes g' or similar guides. At the point g there is secured to it a pulley-cord h, which also passes through guides or screw-eyes h'` and hangs down by the side of the window-frame. The block d is made trapezoidal in form, the lower side d" being adapted to rest upon the recess f"in the faceplate f underneath the rim of the pulley, the

`the addition of external parts.

outer side d being as we have stated and the upper inner side d" being truncated or concave, so as to it within the groove inthe rim of the pulley r. In Width' the block d is slightly narrower than this rim.

The object of the sash-cord fastener is to lock the sash-cord at any desired point, so as to relieve the sash of thestrain of the sashcord` Weight. This is accomplished as follows: The lower sash ,being raised to any desired position, the cord'h is pulled. This lifts up theblock (Z until it is caughtbetween the sash-cord c and the pulley r, when it moves with the cord until it reaches a point at the upper part of the aperture in the faceplate where itis prevented from passing. It there checks the upward movement of the cord and relieves it ofthe pull of the weight attached toits extremity.

It is not necessary to t each pulley of the same sash with a sash-cord fastener, because the weight on one cord is always balanced by the weight of the sash, and it is unnecessary to detach the sash-cord from more than one side.

If it is deemed desirablethe upper-sash cords may be provided with fasteners in the same manner.

The advantages of my invention are: It permits a sash-cord fastener to be attached to a window of usual construction simply by It is cheap. e What I claim as new is r l. A sashcord fastener consisting of a plug adapted to be interposed between the cord and its pulley to choke the aperture in the face plate through which the cord runs, means for placing the plug between the cord and the pulley and means for retracting the plug to position after use.

2. A sash-cord fastener consisting of a plug adapted to press upon the cord and choke the aperture between the cord and the faceplate through which t-he cordruns `incombination with elastic means 4for normally holding the plug away from theY cord.

Witness my hand this 23d day of March, 1901, in the presence'of two subscribing witnesses.

EDWARD L. BLAOKMAN.

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